I think that one thing you first notice is that TS' are taller than you expect. I always find female escorts to be smaller than i had anticpated for some reason.
Laura, Bianka, Sasha and Raica are all excellent punts. Bianka, Sasha and Raica each have multiple videos up on the net so you can see them in action.
I don't think you should approach it from the point of view that you expect the door to be opened by a girl, just check out the pics and vids and go from there.
Always check for lipstick or makeup transfer before you leave the apartment